The World No.1 took a big step by returning to the court, but a lot of work needs to be done.
Rafael Nadal has not set a date for his return.
The Swiss is feeling positive about his rehab.
"It's stupid," Marcelo Rios said of Novak Djokovic's aversion to the Coronavirus vaccine.
"It's a lot better than I ever thought I could do today," said Stan Wawrinka after bowing to Alexander Bublik in Monte Carlo today.
"I'm far from being as fit as I want to. I need to work a lot physically and tennis-wise too," Stan Wawrinka said ahead of Monte-Carlo return.
The Frenchman says he'll miss his role model.